I just found an online shorthand course: Gregg Shorthand 101 (Centennial Version). It is sponsored by universalclass.com. The link is here: http://www.universalclass.com/i/crn/33894.htm
The interesting thing is that it is really a Gregg Shorthand Simplified course (not centennial). Here is the outline, which follows exactly the lessons in the Simplified Gregg manual: http://www.universalclass.com/i/course/shorthand/syllabus.htm. In addition, they recommend using the Simplified manual.
Anyone find it odd that the picture in the website does not match with the title of the course?